CN210890143U

CN210890143U - Barrel-shaped smoke-discharging fire-proof valve

Info

Publication number: CN210890143U
Application number: CN201922008058.1U
Authority: CN
Inventors: 张贵
Original assignee: Hangzhou Qijiang Hvac Equipment Co Ltd
Current assignee: Hangzhou Qijiang Hvac Equipment Co Ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-06-30
Anticipated expiration: 2029-11-20

Abstract

The utility model relates to a bucket-shaped fire prevention valve that discharges fume, circular blade in actuating mechanism, the shell including the shell, install on the shell, be equipped with the blade pivot on the circular blade, be equipped with temperature sensor on the actuating mechanism, the blade pivot is connected in actuating mechanism's pivot, its characterized in that: the circular blade consists of a first layer of metal sheet, a fireproof heat-insulating layer, a second layer of metal sheet and a high-temperature-resistant flame-retardant rubber ring, wherein the fireproof heat-insulating layer is positioned between the first layer of metal sheet and the second layer of metal sheet, and the diameter of the fireproof heat-insulating layer is smaller than that of the first layer of metal sheet; the section of the high-temperature resistant flame-retardant rubber ring is T-shaped, and the convex part of the high-temperature resistant flame-retardant rubber ring is clamped between the first layer of metal sheet and the second layer of metal sheet to wrap the fireproof heat-insulating layer. The utility model has the advantages of simple structure, convenient installation, good heat insulation effect, small smoke leakage amount, safety and reliability.

Description

Barrel-shaped smoke-discharging fire-proof valve

Technical Field

The utility model relates to a fire-fighting equipment technical field, in particular to barrel-shaped fire prevention valve that discharges fume.

Background

The smoke exhaust fire damper is a fire-fighting part, is generally installed on the pipeline of a mechanical smoke exhaust system, is in an open state at ordinary times, has a smoke exhaust function when a fire hazard occurs, is closed when the temperature of smoke in a smoke exhaust pipeline reaches a certain temperature, plays a role in isolating smoke and retarding fire, but the traditional smoke exhaust fire damper has poor control on air leakage, has large air leakage after being closed, and is not beneficial to fire extinguishment and flame retardance. As shown in fig. 1, in the existing barrel-shaped smoke exhaust fire damper, the blades are generally made of a single-layer iron sheet, a blade rotating shaft is welded on the single-layer iron sheet, one end of the blade rotating shaft is connected with an actuating mechanism and is driven to rotate by the actuating mechanism, the other end of the blade rotating shaft penetrates through the casing wall of the smoke exhaust fire damper and is rotatably connected with the casing wall, and the connecting part is easy to accumulate dust and rust for a long time, so that the rotation is difficult. In the process of inflaming retarding after the smoke exhaust fire damper is closed, the single-layer blade is easily burnt by fire, other articles are ignited, and the fireproof and heat insulation effects are poor. The single-layer blade has poor sealing performance, large smoke leakage amount and large particle dust in the cigarette ash, and easily causes air pollution.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a barrel-shaped fire prevention valve that discharges fume that thermal-insulated effectual, the volume of leaking cigarette is little.

In order to solve the technical problem, the utility model discloses a following technical scheme: the utility model provides a bucket-shaped fire prevention valve that discharges fume, includes the shell, installs the circular blade in actuating mechanism, the shell on the shell, be equipped with the blade pivot on the circular blade, be equipped with temperature sensor on the actuating mechanism, the blade pivot is connected in actuating mechanism's pivot, its characterized in that: the circular blade consists of a first metal sheet, a fireproof heat-insulating layer, a second metal sheet and a high-temperature-resistant flame-retardant rubber ring, wherein the fireproof heat-insulating layer is positioned between the first metal sheet and the second metal sheet; the section of the high-temperature resistant flame-retardant rubber ring is T-shaped, and the convex part of the high-temperature resistant flame-retardant rubber ring is clamped between the first layer of metal sheet and the second layer of metal sheet to wrap the fireproof heat-insulating layer.

Furthermore, the bottom end of the blade rotating shaft is hemispherical and is contacted with the inner wall of the shell. Therefore, the contact surface between the rotating shaft and the shell can be reduced, and the rotating resistance is reduced. And the problem of difficult rotation caused by dust deposition and rusting at the rotary joint of the blade rotating shaft and the shell in the prior art can be solved.

The first layer of metal sheet and the second layer of metal sheet are both iron sheets.

The high-temperature resistant flame-retardant rubber ring is a fluororubber ring.

The fireproof heat insulation layer is an asbestos layer.

The utility model discloses a three layer construction's blade sets up the fire prevention insulating layer between first layer sheetmetal and second floor sheetmetal for the blade has the thermal-insulated effect of fire prevention, and wherein one deck sheetmetal can not be burnt red, avoids other article of igniting. Compared with the single-layer metal blade in the prior art, the heat insulation structure has the advantages of high safety and good heat insulation effect. The utility model discloses the periphery of blade is equipped with high temperature resistant flame retardant rubber circle, and when the fire damper that discharges fume was closed, high temperature resistant flame retardant rubber circle and shell inner wall contact have certain sealed effect, have reduced the volume of leaking cigarette. The bottom end of the blade rotating shaft is hemispherical and is contacted with the inner wall of the shell without penetrating through the shell wall, so that the problem that the shell wall needs to be punched and connected with the blade rotating shaft in the prior art is solved, and the rotation difficulty caused by dust accumulation and rusting at the joint of the blade rotating shaft and the shell wall is avoided.

To sum up, the utility model has the beneficial effects of simple structure, easy to assemble, thermal-insulated effectual, the volume of leaking cigarette is little, safe and reliable.

Drawings

Fig. 1 is a schematic structural diagram of a smoke evacuation fire damper in the prior art.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic view of the structure of the blade and the rotating shaft of the blade of the present invention.

FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 3.

Fig. 5 is a schematic cross-sectional structure diagram of the high-temperature resistant flame-retardant rubber ring.

Detailed Description

As shown in fig. 2, 3, 4 and 5, the barrel-shaped smoke-discharging fire-resisting damper comprises a shell 1, an actuating mechanism 2 arranged on the shell, a circular blade 3 arranged in the shell, the circular blade is provided with a blade rotating shaft 4, the actuating mechanism is provided with a temperature sensor 5, the rotating shaft of the actuating mechanism is connected with a blade rotating shaft 4, the circular blade 3 consists of a first layer of metal sheet 31, a fireproof heat-insulating layer 32, a second layer of metal sheet 33 and a high-temperature-resistant flame-retardant rubber ring 34, the fireproof and heat-insulation layer 32 is positioned between the first layer metal sheet 31 and the second layer metal sheet 33, is connected by the rivet 6, the fireproof heat insulation layer 32, the first layer of metal sheet 31 and the second layer of metal sheet 33 are all round, the diameters of the first layer of metal sheet 31 and the second layer of metal sheet 33 are the same, and the diameter of the fireproof heat insulation layer 32 is smaller than that of the first layer of metal sheet 31; the cross section of the high temperature resistant flame retardant rubber ring 34 is t-shaped, and the convex part 341 is clamped between the first layer metal sheet and the second layer metal sheet to wrap the fireproof heat insulation layer 32. The bottom end of the blade rotating shaft 4 is hemispherical and is contacted with the inner wall of the shell. The first layer of metal sheet and the second layer of metal sheet are both iron sheets. The high-temperature resistant flame-retardant rubber ring is a fluororubber ring. The fireproof heat insulation layer is an asbestos layer.

Claims

1. The utility model provides a bucket-shaped fire prevention valve that discharges fume, includes the shell, installs the circular blade in actuating mechanism, the shell on the shell, be equipped with the blade pivot on the circular blade, be equipped with temperature sensor on the actuating mechanism, the blade pivot is connected in actuating mechanism's pivot, its characterized in that: the circular blade consists of a first metal sheet, a fireproof heat-insulating layer, a second metal sheet and a high-temperature-resistant flame-retardant rubber ring, wherein the fireproof heat-insulating layer is positioned between the first metal sheet and the second metal sheet; the section of the high-temperature resistant flame-retardant rubber ring is T-shaped, and the convex part of the high-temperature resistant flame-retardant rubber ring is clamped between the first layer of metal sheet and the second layer of metal sheet to wrap the fireproof heat-insulating layer.

2. The barrel-shaped smoke evacuation fire damper as claimed in claim 1, wherein: the bottom end of the blade rotating shaft is hemispherical and is in contact with the inner wall of the shell.

3. The barrel-shaped smoke evacuation fire damper as claimed in claim 1, wherein: the first layer of metal sheet and the second layer of metal sheet are both iron sheets.

4. The barrel-shaped smoke evacuation fire damper as claimed in claim 1, wherein: the high-temperature resistant flame-retardant rubber ring is a fluororubber ring.

5. The barrel-shaped smoke evacuation fire damper as claimed in claim 1, wherein: the fireproof heat insulation layer is an asbestos layer.